Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-9
TLE Epoch: 2023 8 7.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-9) LANDSAT-9 Lat/Lon    Distance(km)  Time Diff(sec)
 08/07/2023   23:50:52   ( -70.05,  -1.67) 08/07/2023   23:51:45  ( -70.04,  -1.59)    3.29                53
 08/08/2023   00:41:35   (  69.89, 165.89) 08/08/2023   00:41:13  (  69.89, 165.84)    1.81                22
 08/08/2023   01:32:03   ( -69.06, -25.60) 08/08/2023   01:30:55  ( -69.11, -27.58)   78.58                68
 08/10/2023   16:07:42   ( -69.96, 114.24) 08/10/2023   16:08:16  ( -69.97, 114.18)    2.31                34
 08/10/2023   16:58:26   (  69.85, -78.28) 08/10/2023   16:57:43  (  69.87, -78.31)    2.22                43
 08/13/2023   07:34:00   (  70.50,  61.87) 08/13/2023   07:35:10  (  70.36,  63.01)   44.87                70
 08/13/2023   08:24:33   ( -69.94,-129.93) 08/13/2023   08:24:46  ( -69.92,-130.00)    2.92                13
 08/13/2023   09:15:17   (  69.83,  37.54) 08/13/2023   09:14:13  (  69.82,  37.51)    1.58                64
 08/15/2023   23:50:41   (  70.01, 178.42) 08/15/2023   23:51:44  (  70.01, 178.38)    1.53                63
 08/16/2023   00:41:23   ( -69.92, -14.12) 08/16/2023   00:41:14  ( -69.90, -14.14)    1.77                 9
 08/16/2023   01:31:58   (  69.33, 154.04) 08/16/2023   01:30:48  (  69.41, 152.83)   48.27                70
 08/18/2023   16:07:32   (  70.00, -65.78) 08/18/2023   16:08:12  (  70.01, -65.72)    2.49                40
 08/18/2023   16:58:14   ( -69.90, 101.68) 08/18/2023   16:57:42  ( -69.91, 101.76)    2.86                32
 08/21/2023   07:33:54   ( -70.89,-118.71) 08/21/2023   07:35:01  ( -70.75,-116.39)   86.07                67
 08/21/2023   08:24:22   (  69.95,  50.09) 08/21/2023   08:24:41  (  69.93,  50.05)    2.16                19
 08/21/2023   09:15:04   ( -69.85,-142.45) 08/21/2023   09:14:11  ( -69.83,-142.46)    2.33                53